# 7 Incredible Facts About the Human Body You Never Knew
Have you ever stopped and thought about how amazing your body really is?
From the way your brain works to the strength hidden in your tiny little finger, the human body is full of surprises.
Scientists have been studying the human body for centuries, and even today they are still discovering new things. 
In this article on **[ SANJARI ]**, you will learn 7 incredible facts about the human body that will shock you — and the scientific reasons behind them.
Let’s get started!
## 1. Morning Height – Why Are You Taller in the Morning?
Most people think height never changes. But here’s the shocking truth:
**You are actually taller in the morning than at night.**
During the day, when you are standing or sitting, gravity presses down on your spine. This pressure compresses the soft fluid between your spinal bones. As a result, your height can shrink by 1 cm by evening.
At night, when you lie down and sleep, there is no gravity pressure on the spine. The fluid expands again, and you become taller the next morning.
👉 Try this experiment: measure your height right after waking up, and again before bed. You will notice the difference!
## 2. Power of the Little Finger – 50% of Hand Strength
We usually think the thumb is the most important finger, but here’s a hidden fact:
Almost **50% of your hand’s strength comes from the little finger.**
If you try lifting something heavy without using your little finger, your grip becomes much weaker. Athletes and gym trainers know this well — without the little finger, exercises like pull-ups or weightlifting are almost impossible.
In fact, in some old traditions in Japan, cutting off the little finger was used as a punishment because it made a person’s hand almost useless. That shows how powerful and important this small finger really is.
## 3. Music Can Change Your Heartbeat
Have you noticed how music changes your mood instantly?
When you listen to a fast, energetic song, your heartbeat becomes faster. When you hear a slow or sad song, your heartbeat slows down.
This is because of a scientific process called **entrainment**.
Your brain responds to the rhythm of the music, and then it sends signals to your heart.
That’s why motivational songs give you energy, while soft songs make you calm and relaxed. Music is not just entertainment — it has a real effect on your body and emotions.
👉 Next time you feel tired, try playing an energetic song and see how your heartbeat and mood change.
## 4. Brain Energy – Enough to Light a Bulb
Your brain may look small, but it is extremely powerful.
In fact, it generates enough energy to **light up a 15- watt bulb.**
This energy comes from brain cells called **neurons**. These neurons pass signals to each other using electrical and chemical energy. When scientists calculated the total energy produced, they were shocked to find it was powerful enough to light a bulb.
Your brain is like a living computer — always active, even when you are sleeping. That’s why after a long day of thinking, learning, or solving problems, you feel mentally tired.
## 5. Your DNA Matches 50% with a Banana
This one will surprise you the most.
Believe it or not, your DNA is **50% similar to the DNA of a banana!**
How is that possible?
The answer lies in evolution. Millions of years ago, all living beings — plants, animals, and humans — started from the same single-cell origin. Over time, they evolved differently, but the basic DNA patterns remained similar.
That’s why scientists say humans are connected to all living things on Earth. This fact shows how life is deeply connected, even if it looks completely different on the outside.
## 6. Stomach Acid – Stronger Than You Think
Your stomach produces a special liquid called **hydrochloric acid (HCl)**.
This acid is so strong that it can dissolve metal and plastic!
Then why doesn’t your stomach burn?
The answer is a protective layer called **mucus**. This mucus covers the stomach walls and keeps the acid from harming your body.
The main purpose of this acid is to kill harmful bacteria and germs in the food you eat. Without stomach acid, you would get sick every time you ate outside food. So, in a way, your stomach acid is your body’s first line of defense against infections.
## 7. Skin Glow with Emotions
You may not see it, but your skin actually **glows in different colors** depending on your emotions.
When you feel love, anger, or stress, your body releases special hormones like oxytocin and adrenaline. These hormones change the way your skin reflects light. As a result, your skin can glow in shades of red, green, or pink.
Sadly, our human eyes cannot see this glow. But with special scientific instruments, researchers have proven that it really happens.
This is why in old movies people showed “red with love” — it was not just imagination, but science!
## Final Thought ## By SANJARI
The human body is truly a wonder of nature.
From your height changing daily to your brain producing electricity, every part hides a mystery.
These 7 facts are just a small example of how powerful and unique your body really is.
So the next time you listen to music, eat food, or even use your little finger, remember — your body is doing something incredible.
👉 If you enjoyed these facts, share this article with your friends.
## Disclaimer
This article is for **educational and informational purposes only**.
It is not medical advice. For any health issues, please consult a qualified doctor.